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HP OpenView Operations Administrator's Reference - filibeto.org

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About OVO Security<br />

About Network Security<br />

482<br />

About Network Security<br />

In OVO, network security is designed to improve the security of<br />

connections between processes. These secure process connections can be<br />

within a network, across multiple networks, or through routers or other<br />

restrictive devices.<br />

For example, you could limit access to a network or a section of a network<br />

by restricting the set of nodes (with or without OVO agents running on<br />

them) that are allowed to communicate with the management server<br />

across restrictive routers or even a packet-filtering firewall. It is not<br />

important to OVO whether the server or the network of managed nodes<br />

are inside or outside the firewall. A management server outside your<br />

firewall can manage a network of nodes inside your firewall. Conversely,<br />

a management server inside your firewall can manage nodes outside<br />

your firewall.<br />

One way of limiting access to a network, and consequently improving the<br />

network’s inherent security, is to restrict all connections between OVO<br />

processes on the management server and a managed node to a specific<br />

range of ports. To simplify matters, OVO sets the default value on the<br />

managed node to “No security,” and allows you to select the security<br />

configuration node by node. In this way, you can change the security of a<br />

given node, depending, for example, on whether there is a need for the<br />

node to communicate across a firewall or through a restricted router.<br />

Chapter 12

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